body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f4f4;
}

.container {
  max-width: 800px;
  margin: 2rem auto;
  padding: 1rem;
  background: white;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1 {
  text-align: center;
  margin-bottom: 1rem;
  color: #333;
}

form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
  justify-content: space-between;
}

form input {
  flex: 1 1 30%;
  padding: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
}

form button {
  flex: 1 1 100%;
  padding: 0.6rem;
  background: #0077cc;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.3s;
}

form button:hover {
  background: #005fa3;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 0.6rem;
  text-align: center;
  border-bottom: 1px solid #ddd;
}

th {
  background-color: #0077cc;
  color: white;
}

button {
  padding: 0.3rem 0.6rem;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  opacity: 0.8;
}